Write a system of equations to describe the situation below, solve using substitution, and fill
in the blanks.
Tamir and his little sister are saving up money to buy a joint birthday present for their
mother. Tamir already has $11 saved and plans to save $15 per week from his allowance. His
sister has $19 saved so far and will save $7 per week from hers. The two siblings will soon
have saved the same amount towards their mother's gift. How much will each one have
saved? How long will that take?
Tamir and his sister will each have saved $
in
weeks.

Answer:

k= -9

Step-by-step explanation:

2k-3=9k+63-3     [expand the 9(k+7) first]

2k-9k=63-3+3     [put the like terms together]

-7k=63                 [do the simple math]

k= 63 ÷ by -7

k=-9  

Answer:

K = -9

Step-by-step explanation:

2k-3 = 9(k+7)-3

2k-3 = 9k+63-3

2k-3 = 9k+60

2k-9k = 60+3

-7k = 63

-k = 9

k = -9

Answer:

10+ i

Step-by-step explanation:

Answer:

-10

Step-by-step explanation:

-11+1=-10

Answer:

3x+5y=20

Step-by-step explanation:

Answer:

3x + 5y = 20

Step-by-step explanation:

The given y = -3x/5 + 4 is in slope-intercept form.  We are to put it into standard form, which would be Ax + By = C.

Start by eliminating the fraction representing the slope (-3/5); to do this, multiply all three terms by 5:

5y = -3x + 20

Next, rearrange the terms to resemble Ax + By = C:

3x + 5y = 20

Answer:

b

Step-by-step explanation:

Answer:

D.) y >= -2

Step-by-step explanation:

B is wrong; x > 0

C is wrong; y values are greater than or equal -2

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

let's find f (2) :

Answer:

14

Step-by-step explanation:

Hi there!

[tex]f(x) = |7x |\\f(2) = |7(2) |\\f(2) = |14|\\f(2) =14[/tex]

I hope this helps!

Answer:

3.5x10³

Step-by-step explanation:

7x10^5=700000

2x10^2=200

Divide both by 100

7000÷2=3500

divide by 1000 as standard form is less than 10

1000 is 10 cubed

3500÷1000 is 3.5

∴3.5x10^3 is answer

Answer:

Please show the question so I can help you answer it or type it in to me.

Step-by-step explanation:

Hi there!  

»»————-　★　————-««

I believe your answer is:  

[tex]y = 7x - 3\leftarrow \text{No.}\\\\y = 150x \leftarrow \text{Yes.}[/tex]

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]\boxed{\text{General Proportional Formula:}}\\\\y = kx\\\rule{150}{0.5}\\$\bullet \text{ } k - \text{Constant of Proportionality}\\\rule{150}{0.5}\\\text{Since } y=150x \text{ is in this form, we can say that it is a proportional relationship.}\\\rule{150}{0.5}\\\text{We can also tell if something is proportional by graphing them.}[/tex]

[tex]\textbf{Proportional graphs go through the origin.}[/tex]

⸻⸻⸻⸻

Since y = 7x - 3 does not pass the origin, it is not proportional. However, y = 150x does, so it is proportional.

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

Answer:

-28

Step-by-step explanation:

-2×5=_10

3×6=18

-10-18=-28

Considering that the sum of the internal angles of a triangle is of 180º, it is found that x = 20.

The sum of the measures of the internal angles of a triangle is of 180º.

In this problem, the angles are:

Hence:

[tex]46 + 71 + 4x - 17 = 180[/tex]

[tex]4x + 100 = 180[/tex]

[tex]4x = 80[/tex]

[tex]x = \frac{80}{4}[/tex]

[tex]x = 20[/tex]

A similar problem, involving the sum of the internal angles of a triangle, is given at https://brainly.com/question/13387714

Answer:

d to the power of 4

Step-by-step explanation:

[tex]\huge\textsf{Hey there!}[/tex]

[tex]\text{Usually when you have a variable by itself it’s usually understood to be an INVISIBLE ONE}[/tex]

[tex]\rm{d\timesd\times d \times d}[/tex]

[tex]\rm{= 1d\times 1d \times1d\times1d}[/tex]

[tex]\rm{= d^2 \times d^2}[/tex]

[tex]\rm{= d^{2\times2}}[/tex]

[tex]\rm{= d^4}[/tex]

[tex]\huge\boxed{\mathsf{Therefore, \ your \ answer \ should \ be: d^4}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer:

75% no? I feel like some numbers are missing but she'll pay 75%

Answer:

14

Step-by-step explanation:

4 + 3 = 7 (as you do brackets first)

7 X 2 = 14

this is BIDMAS or BODMAS

Answer:

14

Step-by-step explanation:

2 ( 4+3) = 2x7=14

[tex]\\ \sf\longmapsto -6p+7=3(2p-3)-4(-10+4p)[/tex]

[tex]\\ \sf\longmapsto 7-6p=6p-9+40-16p[/tex]

[tex]\\ \sf\longmapsto 7-6p=-10p+31[/tex]

[tex]\\ \sf\longmapsto 7-31=-10p+6p[/tex]

[tex]\\ \sf\longmapsto -24=-4p[/tex]

[tex]\\ \sf\longmapsto 4p=24[/tex]

[tex]\\ \sf\longmapsto p=6[/tex]

Answer:

Because 5 divided by 6 is equal to 0.8333

Step-by-step explanation:

Answer:

182

Step-by-step explanation:

260 x 30% = 78

260 - 78 = 182

Answer:

2. (other side) division property of equality

3. x+1 = -4

4. (other side) addition property of equality

5. x = -5

Step-by-step explanation:

2. (other side) division property of equality

3. x+1 = -4

4. (other side) addition property of equality

5. x = -5

Answer:

24 inches

Step-by-step explanation:

if the temperature humidity and time of year is based on an average

Answer:

(8c-11)/5= x

Step-by-step explanation:

5(2c-?)=2c+11

10c-5x=2c+11

10c-2c=11+5x

(8c-11)/5= x

Answer:

r=8

Step-by-step explanation:

r-(-4)/2-(-2)=3

r+4/4=3

r+4=3×4

r=8

Answer:

54 degrees

Step-by-step explanation:

Full angle is 131 degrees

131-77=54

Answer:

A pound of apples cost 3/4 of a dollar. How much do 5 pounds cost?

Step-by-step explanation:

Essentially you are buying 3/4s of 5 somethings. Since buying a partial of an object is not so common, we will do the inverse, where you buy 5 things, worth 3/4 of something

-Chetan K

9514 1404 393

Answer:

Step-by-step explanation:

Using h, p, g, c to represent the values of the hat, pumpkin, ghost, and cauldron, respectively, we can write 5 equations:

Solving the last equation for h, and substituting into the first equation gives ...

  h = 19 -2g

  g(19 -2g) +(19 -2g) = 40

  2g^2 -17g +21 = 0 . . . . . . . . write in standard form

  (2g -3)(g -7) = 0 . . . . . . . factored form

The values of g that make the factors zero are g = 3/2 and g = 7. If we assume the solution is restricted to integer values, then g = 7, and ...

  h = 19 -2·7 = 5

From equation 4, ...

  5p +7 = 17   ⇒   p = 2

From equation 3, ...

  7 +2c = 27   ⇒   c = 10

The values of the symbols are ...

_____

Check

Equation 2 becomes ...

  10·2 +2 = 22 . . . . . . true